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The Wilkins 1-375XLFT is a 1" Reduced Pressure Principle Backflow Preventer Assembly designed to protect potable water systems from contamination.

Key Specifications:

• Size: 1 Inches
• Maximum Working Pressure: 175 PSI
• Maximum Working Temperature: 180°F
• Notable Certifications: ASSE 1013, cUPC, CSA B64.4
• End Connections: FNPT Threads

Other Related Variants:

• 12-375XLFT: 1/2 Inches version
• 34-375XLFT: 3/4 Inches version
• 112-375XLFT: 1 1/2 Inches version
• 2-375XLFT: 2 Inches version

Materials:

• Housing: Reinforced Nylon (FDA approved)
• Fasteners: Stainless Steel, 300 Series
• Elastomers: Silicone (FDA Approved)
• Elastomers: Buna Nitrile (FDA Approved)
• Internals: Delrin
• Internals: Nylon
• Springs: Stainless Steel, 300 Series
• Ball Valves: Low Lead Cast Bronze, ASTM B 584
• Struts: Stainless Steel, 300 Series

Typical Installation:

Local codes shall govern installation requirements. To be installed in accordance with the manufacturers' instructions and the latest edition of the Uniform Plumbing Code. Unless otherwise specified, the assembly shall be mounted at a minimum of 12" (305mm) and a maximum of 30" (762mm) above adequate drains with sufficient side clearance for testing and maintenance. The installation shall be made so that no part of the unit can be submerged. If installed indoors, the installation shall be supplied with an air gap adapter.

Standards Compliance:

ASSE Listed 1013; cUPC Listed; CSA Certified B64.4; AWWA compliant C511; Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California; NSF/ANSI/CAN 61 & 372

Features & Benefits:

• Lead-Free Construction: Meets NSF/ANSI/CAN 372 with less than 0.25% weighted average lead content for safe potable water applications.
• Dual Protection: Protects against both backsiphonage and backpressure of contaminated water into potable water supply.
• Integral Test Fitting: The Zurn 1-375XLFT features a male 45° flare SAE test fitting for convenient field testing and maintenance.
• Durable Materials: Reinforced nylon housing with stainless steel internals ensures long-lasting performance in demanding environments.

FAQ

Q: What is the required installation height for the Zurn 1-375XLFT?

A: The assembly must be mounted at a minimum of 12 inches and a maximum of 30 inches above adequate floor drains with sufficient side clearance for testing and maintenance.

Q: Can this backflow preventer be installed outdoors?

A: Yes, but for indoor installations an air gap adapter is required. The unit must not be submerged in any installation scenario.

Q: What is the hydrostatic test pressure for the 1-375XLFT?

A: The hydrostatic test pressure is 350 PSI, which provides a safety margin above the maximum working pressure of 175 PSI.

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